Roofing construction



June 28, 1938.

A. l.. WALL A 2,122,077

ROOFING CONSTRUCTION Filed July 24, 1957 ATTORNEYS Patented June^28, 1938 UNITED STATES PATENT OFFICE f 2 Claims.

result may be secured by using coloredl granules.l

As usually constructed, the shingle strips present a flat and unattractive appearance when laid A upon a roof. It is the general purpose and object` of my invention to impart a more pleasingappearance to these strips; to increase the strength,

rigidity, and wearing qualities thereof; and to eny able the exposed portions the better to withstand ,L the'eiects of weather and the lifting effects of the wind. ,Y

l I accomplish these objects in and through the construction of a special form of so-called thickbutt shingle strips, which will be described in y connection with the accompanying drawing,

wherein Fig. 1 shows a section of a rooimade up of composite strips embodying my invention; Fig.

y 211s a plan View of one of the shingle strips shown in the preceding figure; Aand Fig. 3 is an emerged detail in section taken on the line 3-'-3 of Fig. 2, the position the lower portions of strips in the courses above .leing indicated by dot-and-dash lines and showing the location of one of the nailing lines'.

Describing by reference characters ,the various parts illustrated in the drawing,'i denotes a sheet of brous material, such as felt, saturated with liquid bitumen, as asphalt. Applied to the upper surface of this sheet isa coating, 2 of adhesive material, preferably asphalt, having embeddedv therein granules 3 of sand or similar material. I

denotes another coating of similar adhesive material applied to and entirely covering the coating 2 land having embedded thereinV granules 5 of slate or similar material.

6 denotes a coating gi.' asphalt or similar adhesive material which is'applied to and which com- 'Y A50. pletely covers the under surface of the sheet I,

the said coating having finely divided mica particles ll applied thereto and embedded therein, 8 denotes another coating of asphalt or similar adhesive material which is applied to the;bottom of 5s the coating 6, 1 and which extends from the lower end of the strip approximately half the height or width of the same. This coating has particles of granular material, such as slate, applied thereto and embedded therein, Aas indicated at 9.

Each of the strips as thus constructed is pro- 5 vided with slots I0 extending upwardly from the bottom edge thereof and terminating below the upper end of the coating 8, 9. In practice, in strips having a height or width of 12 inches, the coating B, 9 extends upwardly about 6 inches 10 from the bottom of the strip while the slots I0 extend upwardly approximately 5 inches. This will enable the bottom of a strip Ii in the next uppercourse to extend downwardly as far as the tops of the slots in the next lower course and pro- 15 vide at the same time a covering for the nails i2 by which the strips in such lower courses are secured to the roof frame. It will be noted further that, when the strips are nailed in the usual manner-at a short distance above the tops of 20 the slots Ill-the nails will not only be covered by the bottoms of the strips in the next course` above, but will be driven through the thickest and strongest portion of each strip, as will be f evident from Fig. 3, wherein one' of the nails is 25 f indicated at I2.

and 2'are not stippled to indicate the granules 5. 30 y It will be noted that a step is provided between the coating 8, 9 and the coating 6, 1, this step being covered by the butt or butts of the shingle or shingles vin the next course above. Because of this construction, the lower ends of the shingles 35 will hug tightly the roof and the tops of shingles in subjacent courses and will offer greater resistance to the lifting effect ofthe wind than if the steps were provided upon the upper surfaces of the shingles. l f 40 In virtue of myinvention, I am enabled to produce roong having not only all of the advantages due tothe use of the ordinaryA type of thick-butt shingles or shingle strips, but also the advan tages of extra strength and rigidity throughout 45 the thickened portion thereof, together ,with extra wearing qualities and enhanced beauty oi ap.

cover a strip constituting an individual shingle as well as alonger strip having a plurality of tabs, except where the latter type of strip is specifically identied by limitations peculiar thereto.

Having thus described my invention, what E claim is: f

1. A roofing element comprising a strip of saturated brous lmaterial having a' coating of ad= hesive material and granules applied to the upper surface ,thereof and entirely covering the same, a second coating of adhesive material and granules applied to the upper surface of the rst coating and entirely covering the sameta third coating of adhesive material and nely divided granular material applied to and entirely covering the lower surface ofy the said strip, and afourth coating of adhesive and granular material applied to the third coating and extending from the bottom of the strip toward but terminating short of the top thereof.

2. A roong element comprising a strip of saturated ibrousnmateriai having a coating of adhesive material and granules entirely covering the upper surface thereof, a second coating of adhesive 7material and granules applied to the upper surface of the iirst coating and entirely cov- AYANA L. WALL. 

